TBU-DT085-300-WH

Overview

The Bourns TBU-DT085-300-WH is a dual unidirectional high-speed protector (HSP) designed for board-level surge suppression. It functions as a silicon-based solid-state resettable device that blocks transient currents and provides voltage isolation. The component features a rated voltage of 425 V and a current rating of 300 mA. It operates within a temperature range of -40°C to +85°C. The device utilizes an SMD/SMT termination type and is housed in a DFN package. Key characteristics include overcurrent and overvoltage protection capabilities, making it suitable for protecting sensitive electronics against energy surges.

Feature Summary

• Dual unidirectional configuration for comprehensive circuit protection
• Solid-state resettable design eliminates the need for replacement after surge events
• Integrated overcurrent and overvoltage suppression mechanisms
• High-speed response capability for effective transient blocking

Applications

• Telecommunications circuit protection
• Wireless and RF communication systems
• Board-level surge suppression for sensitive electronics

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with authorized distributors or the manufacturer before procurement. Ensure that the DFN package dimensions and thermal requirements align with your PCB layout constraints. Confirm that the 425 V rating and 300 mA current limit are sufficient for your target application's surge environment. Check for any specific handling instructions regarding moisture sensitivity level 1 during storage and reflow soldering processes.

Selection Notes

Select this component when dual unidirectional protection is required for circuits operating at voltages up to 425 V. The 300 mA current rating defines the maximum continuous current capacity. Consider the DFN package size for space-constrained designs. The -40°C to +85°C operating range suits standard commercial and industrial environments. Ensure the application does not exceed the specified voltage and current limits to maintain device integrity and protection efficacy.

Part Context

This part belongs to the Bourns TBU-DT series of High-Speed Protectors. The DT series specifically offers dual unidirectional devices with defined pulse voltages and trigger currents. These components are engineered to provide robust protection against lightning, power induction, cross-power, and ground potential rise events. They serve as an effective barrier by blocking transient currents while maintaining voltage isolation in sensitive electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.